MICHIGAN 77 CB663HND H-Series Connecting Rod Bearing Small Block Chevy

The MICHIGAN 77 CB663HND is a high-performance H-Series connecting rod bearing designed for small block Chevrolet V8 engines, including 305, 307, 327, 350, and 400 cubic inch applications, as well as LS engines (4.8L, 5.3L, 5.7L, 6.0L, 6.2L, and 7.0L). This bearing features standard journal sizing and is manufactured with TM-77 tri-metal construction for exceptional durability and performance.

Key Features:

• H-Series high-performance tri-metal bearing with hardened steel back and thin overlay
• Medium level of eccentricity with high crush factor for optimal seating
• Narrowed design provides greater crankshaft fillet clearance
• Includes dowel pin hole for proper alignment during installation
• Enlarged chamfers accommodate increased fillet radius on performance crankshafts
• Manufactured without flash plating for better seating characteristics
• Sold individually for flexible replacement options

H-Series bearings are engineered for high-performance and competition applications, making them ideal for engines operating in medium to high RPM ranges. The narrowed profile and enhanced chamfers make this bearing particularly well-suited for use with aftermarket performance crankshafts. Michigan 77 bearings are part of the legendary MAHLE/Clevite bearing family, trusted by professional engine builders and racing teams for decades.